Reply To: Product Navigation Buttons – Navigate in the same product category

Second option instead of checking the last assigned product category, to check all the product category tree and shows only products with the same category tree.

For example if a product has the tree Clothes – Tops – Crop Tops to show products either products that has same the last product category (Crop Tops) either to show products that has exactly the same category tree (Clothes – Tops – Crop Tops)

Now the way it works as i understand is to check the first category of the tree
For example if a product has assigned to Clothes – Tops – Crop Tops, it shows products that has assigned Clothes (the first one)